Loom harness frame



AprilA 6, 1937.

i '.J. J. KAUFMANN, JR

LOOM HARNES S FRAM E Filed March 9, 1936 num /sfdw Patented Apr. 6, 1937 UNITED STATES PATENT oFFlcE LOOM HARNESS FRAME Application March 9,

9 Claims.

My invention relates to loom harness frames y and relates more particularly to certain improvements in the devices for supporting, intermediate their ends, the heddle bars which are employed in heddle frames of the type at present most commonly used.

Heretofore, one of the principal difficulties encountered in the use of heddle frames having auxiliary heddle bars upon which the heddles are lo mounted has been to provide a completely satisfactory support for the portions of the bar between the ends thereof, which will hold and support the heddle bars in the desired locations whereby there will be afforded the requisite freedom of the heddles on the bars, and in which there will be a minimum of wear of the heddle bar and the parts contacting the bars at the place of support.

The principal object of the present invention is to provide an improved device for properly supporting heddle bars intermediate their ends,

into which device a heddle bar can be readily` introduced and from which the heddle bar may be readily released as desired, and which will support the heddle bar in such a manner as to minimize the wear at the place of support.

A further object of the invention is to provide a heddle bar support which will provide a firm yet cushioned mounting for the -heddle bars, to the end that wear and breakage of the heddles will be reduced to a minimum, particularly when used in high speed looms and in the weaving of heavy fabrics.

A further object of the invention is to provide a heddle bar support in which the heddle bar will be so gripped that there will be no looseness of the heddle bar with respect to the supporting device; thus reducing wear and minimizing breakage of the heddle bar and the support.

A further object of the invention is to provide a heddle bar support having a large bearing surface at the point of contact with the heddle bar, which will also serve to reduce wear at this point.

The nature and characteristic features of the present invention will be more readily understood from the following description taken in connection with the accompanying drawing forming part hereof, in which; l

Figure 1 is an elevational view of a heddle frame provided with a heddle bar supporting device embodying the main features of the present invention;

Fig. 2 is an enlarged vertical section taken 5* approximately on the line 2 -2 of Fig. 1;

1936, Serial No. 67,834

Fig. 3 is an enlarged side elevation of the heddle bar supporting devicej Fig. 4 is a horizontal sectional view taken approximately on the line 4 4 of Fig. 3;

Fig. 5 is a view similar to Fig. 2, illustrating a modified form of the invention.

It will, of course, be understoodV that the description and drawing herein contained are illustrative merely, and that various modifications and changes may be made therein without departing from the spirit of the invention.

Referring more particularly to Figs. 1 to 4 of the drawing, the heddle frame there shown comprises top and bottom rails I0, usually made of wood and connected at their end portions by metallic end struts II. The heddle bars I2' are mounted in the frame in the customary manner with their respective end portions supported in the end struts II and secured therein in the usual manner by spring hook members I3. The heddles I4, which may be of any preferred type, are mounted on the heddle bars I2 in the customary manner.v

The rail engaging portion of the supporting device of the present invention may be of any preferred construction, although it has been found preferable to construct the same in one of the forms shown in the drawing.

The rail engaging portion comprises a pin or bolt member I5 having a flattened end portion I6. A Washer II is mounted on the pin or bolt member at the place where it merges into the flattened portion. This washer I'I bears against the inner edge of the rail I0. The rail'engaging portion of the bolt member I5 may be threaded as at I 8 for the reception of a wing nut I9 and a washer 20 may be interposed between said wing nut i9 and the outer edge of the rail I9, or if desired, the portion of the bolt member for engagement with the rail may be provided with a terminal portion formed substantially as a wood screw 2l, as shown in Fig. 5. The flattened end portion I6 of the pin I5 has projections formed thereon to provide an abutment or stop for purposes hereinafter explained.

An outer heddle bar clamp member 23 is mounted on the iiattened portion I6 of the pin I5 adjacent the rail, and is preferably provided with one or more heddle bar receiving recesses 24. A spring 25 preferably rectangular and conforming generally to the shape of the flattened end portion I5 is mounted on the flattened end portion I6 of the pin I5. The spring 25 bears at one end on an edge portion of the bar clamp member 23 and the other end portion abuts amount of space along the bar I2.

against the metal Washer I1 which bears against the inner edge of the rail I. An inner heddle bar clamp member 26 is also slidably mounted on the flattened. end portion I6 of the pin I5, remote from the rail IB, between the heddle bar and the free end of the pin l5, and is provided with one or more heddle bar receiving recesses as at 2. A spring 28 which may be similar in shape to the spring 25 but preferably somewhat stiffer, is provided and is interposed between an end face of the bar clamp member 26 and the abutment portions 22 formed on the attened end portions I6 of the pin I5. A spring enclosing sleeve member 29 is provided and is preferably secured to an edge face of the heddle bar clamp member 26 and surrounds and encases the spring 28. Slots 38 are provided in opposed portions of the sleeve member 29 to permit movement of the bar clamp member 26 within a predetermined range and at the same time limit the extent of vertical movement of the bar clamp member 26.

The heddle bar clamp members, 23 and 26, as will be seen particularly in Fig. 3, are relatively wide, without, however, occupying an undue This width provides an increased bearing surface of the clamp members on the heddle bars I2 and contributes materially to the reduction of wear of the contacting parts.

The heddle bar clamp members, 23 and 26, may be constructed so that adjacent portions thereof are in contact, but it has been found preferable to construct the same so that they -are spaced a slight distance, as at 3|, when the heddle bars I2 are in place. Any wear which occurs, or any variation in height of the heddle bar is thus accommodated.

The operation of the device will be readily understood. When it is desired to mount a heddle bar I2 in the frame, an edge of the bar I2 is pressed against a recessed portion of one of the heddle bar clamps, 23 or 26, and forced against the pressure exerted by the spring 25 or 28 until the clamps 23 and 26 are separated a sufficient distance to slip the bar I2 into the recesses 24 and 2'I in the heddle bar clamps 23 and 26. The force of the springs 25 and 28 acting on the heddle bar clamps 23 and 26, respectively, causes the heddle bar I2 to be rmly gripped and held in position therebetween. The provision of the springs 25 and 28 insures a cushioned mounting for the heddle bar I2, so that while the bar is resiliently supported, no appreciable movement thereof will take place.

In Fig. 5 there is shown a modified form of the invention, in which a pin or bolt member |52* is provided, with the same having end abutment portions 22a formed on the ilattened end portion I6a of the pin I5a in substantially the same manner as in the preferred form of the present invention.

In this instance, however, a clamping member 33 is rigidly secured to the flattened end portion I6a of the pin Ia, for example, by means D of the rivet 34. A slidable heddle bar clamp member 2ta is mounted on the pin I5e, the same having recesses 2la for clamping the heddle bar I2 in position with respect to the heddle bar receiving recesses 35 of the xed member 33. A spring 28S, preferably rectangular and generally similar in construction to the spring 28, is mounted on the iiattened end portion I6a of the pin I5a close to the free end of said pin. The spring 28a bears at one end on the abutment portions 22*l and at the other end on an end face of the bar clamp member 26a.

A spring enclosing sleeve member 2Sa is provided and is preferably secured to an edge face of the heddle bar clamp member 26a, and surrounds and encases the spring 28a. Slots 30a are provided in opposed portions of the sleeve member 29ai to permit movement of the bar clamp member 26a within a predetermined range and at the same time limit the extent of vertical movement of the bar clamp member 26e.

I claim:

1. In a loom heddle frame. a heddle bar upon which the heddles are mounted and a support for the heddle bar, said support including a pin having one end mounted on a rail of the frame, and resiliently actuated heddle bar clamping means mounted on said pin between the heddle bar and the free end of the pin and engaging the portion of the heddle bar toward the free end of the pin.

2. In a loom heddle frame, a heddle bar upon which the heddles are mounted and a yielding support for said heddle bar, said support including a pin having one end mounted on a rail of the frame, a clamping member movably mounted on the end of the pin between the heddle bar and the extremity of the pin for engagement with a portion of the heddle bar toward the free end 0f the pin, and resilient means for urging said clamping member into heddle bar engagement.

3. In a loom heddle frame, a heddle bar upon which the heddles are mounted and a yielding support for said heddle bar, said support including a pin having one end mounted on a rail of the frame, a clamping member movably mounted on the end of the pin between the heddle bar and the free extremity of the pin for engagement with a portion of the heddle bar toward the free end of the pin, and resilient means mounted on the pin between the clamping member and the free extremity of the pin for urging said clamping member into heddle bar engagement.

4. In a loom heddle frame, a heddle bar upon which the heddles are mounted and a yielding support for said heddle bar, said support including a pin having one end mounted on a rail of the frame and the other end provided with an abutment, a clamping member movably mounted on the pin and bearing on the portion of said heddle bar toward said abutment and a spring between said abutment and said clamping member.

5. In a loom heddle frame, a heddle bar upon which the heddles are mounted and a support for said heddle bar, said support including a pin having one end mounted on a rail of the frame and the other end projecting toward the other end of the frame, means for holding said heddle bar, said means including a clamping member movable along the pin and a spring between the clamping member and the projecting end of the pin for holding the clamping member in yielding engagement with the heddle bar.

6. In a loom heddle frame, a heddle bar upon which the heddles are mounted and a resilient support for said heddle bars, said support including a pin having one end mounted on a rail of the frame and a plurality of separately movable spring-pressed clamping members mounted on the pin and each bearing on said heddle bar.

'7. In a loom heddle frame, a heddle bar upon which the heddles are mounted, and a yielding support for the heddle bar including a pin having one end mounted on a rail of the frame, a clamping member mounted on the pin and bearing on said heddle bar, a spring for holding said clamping member against said heddle bar, a second clamping member mounted on the pin and bearing on the opposite portion of said heddle bar and a spring mounted on said pin and holding said second mentioned clamping member against said heddle bar.

8. In a loom heddle frame, a heddle bar upon which the heddles are mounted, and a yielding support for the heddle bar including a pin having one end mounted on a rail of the frame, the other end of the pin being flattened, a clamping member slidably mounted on the attened portion of the pin and bearing on said heddle bar, means for holding said clamping member against said heddle bar, a second clamping member slidably mounted on the pin and bearing on the opposite portion of said heddle bar, and means for holding said second mentioned clamping member against said heddle bar.

9. In a loom heddle frame, a heddle bar upon which the heddles are mounted, and a. yielding support for the heddle bar comprising a pin having one end mounted on a rail of the frame, clamping members slidably mounted on the pin and bearing on said heddle bar on opposed portions thereof, and resilient members for holding said clamping members in contact with said heddle bar, said resilient members acting in op posite directions.

JOHN J. KAUFMANN, JR. 

